Furnace



(No Model.)

F. G; GIRTANNER.

FURNACE.

N6. 575,421. Patented Jah. 19, 1897.

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UNITED STATES ATENT OFFICE.

FRED G. GIRTANNER, OF ST. LOUIS, MISSOURI, ASSIGNOR TO THE KOCH-ERSPERGER-HALLAM HEATING 00., OF KANSAS CITY, MISSOURI.

FU RNAC E.

SPECIFICATION forming part of Letters Patent No. 575,421, dated January19, 1897. Application filed December 2'7, 1895. Renewed December '7,1896. Serial No. 614,833. (No model.)

To aZZ whom it may concern:

Be it known that I, FRED G. GIRTANNER, of the city of St. Louis, Stateof Missouri, have invented certain new and useful Improvements in SmokeConsuming Furnaces, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, forming apart hereof.

My invention relates to an improved smokeconsuming furnace; and itconsists in the novel construction, combination, and arrangement ofparts hereinafter described and claimed.

In the drawings, Figure 1 is a front elevation of a smoke consumingfurnace constructed in accordance with my invention. Fig. 2 is atransverse sectional View taken through the fire-box and front end ofthe boiler of my improved furnace. Fig 3 is a detail vertical sectionalview taken approximately on the indicated line 3 3 of Fig. 2. Fig. 4 isa sectional perspective view of a modified form of my improved furnace.

Referring by numerals to the accompanying drawings, 1 indicates theboiler, the same being set between the walls 2 2 in the usual manner.Built at the forward end of the boiler-setting, immediately to one sideof the point usually occupied by the fire-box, is a rectangular magazine3, the same being held together by suitable metallic straps 4E, and upontop of said magazine is located a plate 5, the same being provided witha hinged door 6. Formed in the side wall 2 of the boiler-setting, in aplane below the plane occupied by the bottom of the boiler l, andconnecting the interior of the magazine 3 with the chamber beneath saidboiler 1, is an arched opening 7. Grate-bars 8 of any suitableconstruction are embedded at one end in the outside wall of the magazine3 and extend from thence downwardly through the arched openin g 7 andinto the chamber beneath the boiler 1, and said grate-bars 8 aresupported at their inner ends by a Wall 9, analogous to the bridge-wallof an ordinary furnace.

Formed in the outside wall of the magazine 3, at points above the upperends of the gratebars 8, are apertures 10, the same being closed byordinary dampers 11, the same being arranged to slide upon the face ofthe out-side wall of said magazine. Formed in said wall, at a pointimmediately below the upper ends of said grate-bars, is a series ofapertures 12, the same being normally closed by an ordinary slide-damper1%. Embedded in the inner face of the outside wall of the magazine, at apoint immediately below the series of apertures 12, is the upper end ofa deflector or inclined plate 14, the lower end of which rests upon theground-line of the furnace.

Arranged in the front Wall of the furnace, at a point immediately belowthe boiler, is a pair of doors 15, and arranged in the front wall of themagazine 3, and at a point below the grate-bars 8, is a door 16.

In the modification shown in Fig. 4 the general construction of thefurnace as hereinbefore described is carried out, with the exceptionthat the magazine 3 is located immediately in front of the boiler, thearched opening being immediately below the front end of said boiler, andthe rear ends of the gratebars rest directly upon thetransversely-arranged bridge-wall. In this construction the openings 10and 12 are arranged in the front wall of the magazine 3 instead of inthe side wall, as in the preferred form of the furnace.

The portions of the walls of my improved furnace that are subjected tothe greatest heat may be, if desired, constructed of fire-brick, theseportions being shown by the stipple shading in the drawings.

In the practical use of my improved smokeconsuming furnace, after themagazine has been filled or partially filled with fuel, the

fire is started upon the ends of the grate-bars that rest upon thebridge-wall 9. The products of combustion from said fire will passrearwardly through the ends of the gratebars, through the chamberbeneath the boiler l, and from thence into the boiler-tubes at theirrear ends, through said boiler-tubes, and into the smoke-stack in theusual manner. The fire after once being started will necessarily coke orchar the fuel at the upper ends of the grate-bars and in the lower endof the magazine, and the gases and smoke produced by said coking orcharring will be carried into the fire or bed of coals located upon theforward ends of the grate-bars and thereby be consumed. The combustionof said smoke and gases necessarily produces an intense heat, which isVery effective in heating the water Within the boiler. Draft to the fireis obtained by opening or moving the slides that cover the apertures 10and 12. Should fuel in the lower end of the magazine become so coked orcharred as that it will not readily feed onto the grate-bars, a poker orlike instrument may be passed through either of the series of apertures10 and said coked portion so broken or disintegrated as that it willreadily feed downwardly onto said grate-bars. The fine ashes will passdownwardly through the grate-bars into the ash-pit, from whence they maybe removed through the door 16, while the clinkers and the like willpass from the ends of the grate-bars 8 to the fioor of the chamberbeneath the boiler 1, where they may be removed through the doors 15.

A furnace of my improved construction may be used as a hay or strawburner or as a garbage-furnace, as Well as an ordinary furnace usingcoal as a fuel, and said furnace is easily and cheaply constructed, canbe applied to boilers already set and in position, is extremelyeconomical in the use of fuel of any kind, and by its peculiarconstruction will readily consume all the smoke and gases and likeproducts of combustion arising from the charring fuel, and by so doingthe entire heat-giving properties of the fuel are utilized.

I claim- The combination with aboiler 1 set between the walls 2, 2, inthe usual manner, of a furnace comprising the rectangular magazine 3,located to one side of the front end of the boiler-settin g and composedof a suitable Wall parallel with the Walls 2, 2, of the boiler-setting,the metallic straps 4 to hold said magazine together, the plate 5 on topof said magazine, the hinged door 6 in said plate, the dividing wall 2having the arched openin 7, the gratebars 8 embedded at one end in theoutside wall of said magazine and extending from thence downwardlythrough the arched opening 7, and into the chamber beneath the boiler 1,the wall 9 supporting the inner ends of said grate-bars, the dampers 11closing the apertures 10 in the outside Wall of the magazine 3 and abovethe end of said grate-bars 8, the damper 13 closing the apertures 12 insaid wall and below the ends of said grates, the inclined plate 14:embedded in the inner face of the outside wall of the magazine, the pairof doors 15 in the front wall of the fur nace at a point immediatelybelow the boiler, the door 16 in the front wall of the magazine at apoint below the grate-bars 8, and suitable front and rear Walls to saidfurnace and magazine, substantially as and for the purposes stated.

In testimony whereof I affix my signature in presence of two witnesses.

FRED G. GIRTANNER. Witnesses:

E. E. LONGAN, JOHN C. HIGDON.

